>>> geonetwork = 'https://georchestra.mydomain.org/geonetwork/srv/fre/csw'
>>> csw = CatalogueServiceWeb(geonetwork)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/dist-packages/owslib/csw.py", line 88, in __init__
    self._invoke()
  File "/usr/lib/python2.7/dist-packages/owslib/csw.py", line 658, in _invoke
    self.response = openURL(self.request, None, 'Get', username=self.username, password=self.password, timeout=self.timeout).read()
  File "/usr/lib/python2.7/dist-packages/owslib/util.py", line 183, in openURL
    **rkwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/adapters.py", line 370, in send
    timeout=timeout
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/packages/urllib3/connectionpool.py", line 544, in urlopen
    body=body, headers=headers)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/packages/urllib3/connectionpool.py", line 344, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.7.0-py2.7.egg/requests/packages/urllib3/connectionpool.py", line 314, in _raise_timeout
    if 'timed out' in str(err) or 'did not complete (read)' in str(err):  # Python 2.6
TypeError: __str__ returned non-string (type Error)
>